fix readme.md (#153)

* fix readme.md

* fix readme.md

* fix readme.md

* fix readme.md

* fix grpc readme.md

* fix grpc readme.md

Co-authored-by: Yaron Schneider <[email protected]>

Author: Yao Yao

service/grpc/Readme.md

@@ -44,18 +44,22 @@ if err := s.Start(); err != nil {
 To handle events from specific topic you need to add at least one topic event handler before starting the service:
 
 ```go
-if err := s.AddTopicEventHandler("messages", "topic1", eventHandler); err != nil {
+sub := &common.Subscription{
+		PubsubName: "messages",
+		Topic:      "topic1",
+	}
+if err := s.AddTopicEventHandler(sub, eventHandler); err != nil {
     log.Fatalf("error adding topic subscription: %v", err)
 }
 ```
 
 The handler method itself can be any method with the expected signature:
 
 ```go
-func eventHandler(ctx context.Context, e *daprd.TopicEvent) error {
+func eventHandler(ctx context.Context, e *common.TopicEvent) (retry bool, err error) {
 	log.Printf("event - PubsubName:%s, Topic:%s, ID:%s, Data: %v", e.PubsubName, e.Topic, e.ID, e.Data)
 	// do something with the event
-	return nil
+	return true, nil
 }
 ```
 

service/http/Readme.md

@@ -19,13 +19,13 @@ Or with address and an existing `http.ServeMux` in case you want to combine exis
 ```go
 mux := http.NewServeMux()
 mux.HandleFunc("/", myOtherHandler)
-s := daprd.NewService(":8080", mux)
+s := daprd.NewServiceWithMux(":8080", mux)
 ```
 
 Once you create a service instance, you can "attach" to that service any number of event, binding, and service invocation logic handlers as shown below. Onces the logic is defined, you are ready to start the service:
 
 ```go
-if err = s.Start(); err != nil && err != http.ErrServerClosed {
+if err := s.Start(); err != nil && err != http.ErrServerClosed {
 	log.Fatalf("error: %v", err)
 }
 ```
@@ -49,10 +49,10 @@ if err != nil {
 The handler method itself can be any method with the expected signature:
 
 ```go
-func eventHandler(ctx context.Context, e *common.TopicEvent) error {
+func eventHandler(ctx context.Context, e *common.TopicEvent) (retry bool, err error) {
 	log.Printf("event - PubsubName:%s, Topic:%s, ID:%s, Data: %v", e.PubsubName, e.Topic, e.ID, e.Data)
 	// do something with the event
-	return nil
+	return true, nil
 }
 ```